Carbon Cleaning with Walnut Blasting

[Brock]

I asked this same question on here a year ago and Noone but me liked the idea.

Rawze figured there would be no significant mpg gain to justify the risk.

I still personally believe it would give you gains but have not tried it. The walnut hull is good as it will just burn away if any makes it past the valves. My only concern would be maybe accelerating valve oil leakage..... maybe the soot was plugging it up from leaking.

Another of rawzes concerns was maybe you miss a chunk of carbon in there and it gets caught in the valves.... that thought right there is why I haven't.